Additional Financial Information - Accounts Receivable Monetization (Details) - Trade Accounts Receivable - USD ($) $ in Millions	12 Months Ended
Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Individual Monetization Agreements
Transfer of Financial Assets Accounted for as Sales [Line Items]
Net cash proceeds received (paid or to be paid)(1)	$ 464.9	$ 491.9	$ 383.0
Carrying value of receivables transferred and derecognized	478.3	512.3	400.5
Loss recorded related to transfers of receivables	13.4	20.4	17.5
Individual Monetization Agreements \| Lions Gate Entertainment Corp.
Transfer of Financial Assets Accounted for as Sales [Line Items]
Net cash proceeds received (paid or to be paid)(1)	1,280.0	1,385.9	1,382.7
Carrying value of receivables transferred and derecognized	1,300.4	1,413.2	1,405.9
Loss recorded related to transfers of receivables	$ 20.4	27.3	23.2
Pooled Monetization Agreements
Transfer of Financial Assets Accounted for as Sales [Line Items]
Gross cash proceeds received for receivables transferred and derecognized		22.2	167.0
Less amounts from collections reinvested under revolving agreement		(9.1)	(94.3)
Proceeds from new transfers		13.1	72.7
Collections not reinvested and remitted or to be remitted		(13.4)	(66.6)
Net cash proceeds received (paid or to be paid)(1)		(0.3)	6.1
Carrying value of receivables transferred and derecognized		22.1	164.8
Obligations recorded		2.1	5.9
Loss recorded related to transfers of receivables		2.0	3.7
Purchases of previously transferred financial assets		46.0	27.4
Pooled Monetization Agreements \| Lions Gate Entertainment Corp.
Transfer of Financial Assets Accounted for as Sales [Line Items]
Gross cash proceeds received for receivables transferred and derecognized		22.2	167.0
Less amounts from collections reinvested under revolving agreement		(9.1)	(94.3)
Proceeds from new transfers		13.1	72.7
Collections not reinvested and remitted or to be remitted		(13.4)	(66.6)
Net cash proceeds received (paid or to be paid)(1)		(0.3)	6.1
Carrying value of receivables transferred and derecognized		22.1	164.8
Obligations recorded		2.1	5.9
Loss recorded related to transfers of receivables		2.0	3.7
Purchases of previously transferred financial assets		$ 46.0	$ 27.4

Cash Flows Between Transferor and Transferee, Net Proceeds (Disbursements)

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- Definition

Cash flows between a transferor and a transferee attributable to collections not reinvested in revolving period transfers related to either a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction (including, but not limited to, servicing and recourse).

+ References

No definition available.

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- Definition

Cash Flows Between Transferor and Transferee, Proceeds from New Transfers, Gross

+ References

No definition available.

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Transfer of Financial Assets Accounted for as Sales, Amount Derecognized During Period

+ References

No definition available.

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- Definition

Represents the initial fair value recorded for liabilities incurred on the transfer of financial assets in a securitization, asset-backed financing arrangement, or a similar transfer which transaction is recognized as a sale of the transferred financial assets.

+ References

No definition available.

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- Definition

Cash Flows between a transferor and a transferee attributable to collections reinvested in revolving period transfers related to either a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction (including, but not limited to, servicing, recourse, and restrictions on transferor's interests in the transferred financial assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-3

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- Definition

Cash Flows between a transferor and a transferee attributable to newly transferred assets related to either a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction (including, but not limited to, servicing, recourse, and restrictions on transferor's interests in the transferred financial assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-3

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- Definition

Cash Flows between a transferor and a transferee attributable to purchases of previously transferred financial assets (or its underlying collateral) related to a securitization, asset-backed financing arrangement, or similar transfer in which the transferor has continuing involvement with the transferred financial assets underlying the transaction (including, but not limited to, servicing, recourse, and restrictions on transferor's interests in the transferred financial assets).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-3

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- Definition

Reflects, by transferred financial asset type, the amount of sales proceeds in excess of or deficient from the sum of the carrying amounts of transferred financial assets plus transaction costs, including those transactions in which the seller/transferor has continuing involvement with the financial assets that have been transferred.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 860
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481326/860-20-50-3

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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